R. Das et al., TIME-DOMAIN ELECTRON-SPIN-RESONANCE STUDIES ON HYDROGEN-ATOM TRANSFERTO PHOTOEXCITED QUINONES, Proceedings of the Indian Academy of Sciences. Chemical sciences, 105(4-5), 1993, pp. 273-277
Time-domain electron-spin-resonance studies on p-benzoquinone using et
hanol and isopropanol as solvents show emissively polarized ESR spectr
a of semiquinone and hydroxyalkyl radicals within 0.5 mus after the la
ser pulse at 248 nm. The hydrogen abstraction from the alcohols by the
triplet excited quinone is concluded to be the primary photochemical
step.